Abstract
Pot experiments were conducted in the greenhouse on a calcareous soil to study effect of nitrogen (N) on the alleviation of boron (B) toxicity in rice. The treatments consisted of factorial combination of six levels of B (0, 2.5, 5, 10, 20, and 40 mg kg−1 as boric acid), and four levels of N (0, 75, 150, and 300 mg kg−1 as urea) in a completely randomized design with three replicates. Boron addition (higher than 2.5 mg kg−1) significantly reduced the seeds yield. Nitrogen addition alleviated the growth suppression effects caused by B supplements. Yield was increased by application of 2.5 mg B kg−1 at all N levels, but at higher levels, B significantly decreased the yield of rice. Boron concentration declined with increasing N levels. Boron application increased the concentrations of B, potassium, phosphorous (P), and zinc. Nitrogen application decreased the concentration of Zn and increased the concentration of N and P.
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Claims 9
Claim · model-written summary
Boron addition above 2.5 mg/kg significantly reduced rice seed yield.
- Taxon
- rice
Oryza sativae0 - Treatment
- Boron addition (higher than 2.5 mg kg−1)e1
- Outcome
- seeds yielde1
- Direction
- reducede1
- Setting
- greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted in the greenhouse on a calcareous soil to study effect of nitrogen (N) on the alleviation of boron (B) toxicity in rice”
e1“Boron addition (higher than 2.5 mg kg−1) significantly reduced the seeds yield”
Claim · model-written summary
Nitrogen addition alleviated the growth suppression caused by boron supplements in rice.
- Taxon
- riceOryza sativae0
- Treatment
- Nitrogen additione2
- Outcome
- growth suppression effects caused by B supplementse2
- Direction
- alleviatede2
- Setting
- greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted in the greenhouse on a calcareous soil to study effect of nitrogen (N) on the alleviation of boron (B) toxicity in rice”
e2“Nitrogen addition alleviated the growth suppression effects caused by B supplements”
Claim · model-written summary
Application of 2.5 mg B/kg increased rice yield at all nitrogen levels.
- Taxon
- riceOryza sativae0
- Treatment
- application of 2.5 mg B kg−1e3
- Outcome
- Yielde3
- Direction
- increasede3
- Qualifier
- at all N levelse3
- Setting
- greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted in the greenhouse on a calcareous soil to study effect of nitrogen (N) on the alleviation of boron (B) toxicity in rice”
e3“Yield was increased by application of 2.5 mg B kg−1 at all N levels, but at higher levels, B significantly decreased the yield of rice”
Claim · model-written summary
At higher boron levels, boron significantly decreased rice yield.
- Taxon
- riceOryza sativae0
- Treatment
- higher levelse3
- Outcome
- yield of ricee3
- Direction
- significantly decreasede3
- Setting
- greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted in the greenhouse on a calcareous soil to study effect of nitrogen (N) on the alleviation of boron (B) toxicity in rice”
e3“Yield was increased by application of 2.5 mg B kg−1 at all N levels, but at higher levels, B significantly decreased the yield of rice”
Claim · model-written summary
Boron concentration in rice declined with increasing nitrogen levels.
- Taxon
- riceOryza sativae0
- Treatment
- increasing N levelse4
- Outcome
- Boron concentratione4
- Direction
- declinede4
- Setting
- greenhousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted in the greenhouse on a calcareous soil to study effect of nitrogen (N) on the alleviation of boron (B) toxicity in rice”
e4“Boron concentration declined with increasing N levels”
Claim · model-written summary
Boron application increased the concentrations of B, potassium and phosphorus in rice.
- Taxon
- riceOryza sativae0
- Treatment
- Boron applicatione5
- Outcome
- concentrations of B, potassium, phosphorous (P)e5
- Direction
- increasede5
- Setting
- greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted in the greenhouse on a calcareous soil to study effect of nitrogen (N) on the alleviation of boron (B) toxicity in rice”
e5“Boron application increased the concentrations of B, potassium, phosphorous (P), and zinc”
Claim · model-written summary
Boron application increased zinc concentration in rice.
- Taxon
- riceOryza sativae0
- Treatment
- Boron applicatione5
- Outcome
- zince5
- Direction
- increasede5
- Setting
- greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted in the greenhouse on a calcareous soil to study effect of nitrogen (N) on the alleviation of boron (B) toxicity in rice”
e5“Boron application increased the concentrations of B, potassium, phosphorous (P), and zinc”
Claim · model-written summary
Nitrogen application decreased zinc concentration in rice.
- Taxon
- riceOryza sativae0
- Treatment
- Nitrogen applicatione6
- Outcome
- the concentration of Zne6
- Direction
- decreasede6
- Setting
- greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted in the greenhouse on a calcareous soil to study effect of nitrogen (N) on the alleviation of boron (B) toxicity in rice”
e6“Nitrogen application decreased the concentration of Zn and increased the concentration of N and P”
Claim · model-written summary
Nitrogen application increased the concentrations of N and P in rice.
- Taxon
- riceOryza sativae0
- Treatment
- Nitrogen applicatione6
- Outcome
- the concentration of N and Pe6
- Direction
- increasede6
- Setting
- greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pot experiments were conducted in the greenhouse on a calcareous soil to study effect of nitrogen (N) on the alleviation of boron (B) toxicity in rice”
e6“Nitrogen application decreased the concentration of Zn and increased the concentration of N and P”
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See all 9 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.